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/*
* This file is part of the Echo Web Application Framework (hereinafter "Echo").
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo.app.table;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;
import nextapp.echo.app.Extent;
/**
* A description of a single column of a Table.
*/
public class TableColumn
implements Serializable {
/** Serial Version UID. */
private static final long serialVersionUID = 20070101L;
public static final String CELL_RENDERER_CHANGED_PROPERTY = "cellRenderer";
public static final String HEADER_RENDERER_CHANGED_PROPERTY = "headerRenderer";
public static final String HEADER_VALUE_CHANGED_PROPERTY = "headerValue";
public static final String IDENTIFIER_CHANGED_PROPERTY = "identifier";
public static final String MODEL_INDEX_CHANGED_PROPERTY = "modelIndex";
public static final String WIDTH_CHANGED_PROPERTY = "width";
private Extent width;
private TableCellRenderer cellRenderer;
private TableCellRenderer headerRenderer;
private Object headerValue;
private int modelIndex;
private Object identifier;
private PropertyChangeSupport pcs = new PropertyChangeSupport(this);
/**
* Creates a TableColumn with the specified model index,
* undefined width, and undefined cell and header renderers.
*
* @param modelIndex the column index of model data visualized by this
* column
*/
public TableColumn(int modelIndex) {
this(modelIndex, null, null, null);
}
/**
* Creates a TableColumn with the specified model index and width,
* and undefined cell and header renderers.
*
* @param modelIndex the column index of model data visualized by this
* column
* @param width the column width
*/
public TableColumn(int modelIndex, Extent width) {
this(modelIndex, width, null, null);
}
/**
* Creates a TableColumn with the specified model index, width,
* and cell and header renderers.
*
* @param modelIndex the column index of model data visualized by this
* column
* @param width the column width
* @param cellRenderer the renderer to use for rendering model values
* @param headerRenderer the renderer to use for rendering the header cell
*/
public TableColumn(int modelIndex, Extent width, TableCellRenderer cellRenderer, TableCellRenderer headerRenderer) {
super();
this.modelIndex = modelIndex;
this.width = width;
setCellRenderer(cellRenderer);
setHeaderRenderer(headerRenderer);
}
/**
* Adds a PropertyChangeListener to be notified
* of property changes to the column.
*
* @param l the listener to add
*/
public void addPropertyChangeListener(PropertyChangeListener l) {
pcs.addPropertyChangeListener(l);
}
/**
* Retrieves the TableCellRenderer used to render values
* contained in the column. The value of this property may be null,
* in which case the table should revert to using its default cell
* renderer.
*
* @return the cell renderer for this column
*/
public TableCellRenderer getCellRenderer() {
return cellRenderer;
}
/**
* Returns the TableCellRenderer used to render the
* header cell of this column. The value of this property may be null,
* in which case the table should revert to using its default cell
* renderer.
*
* @return the header cell renderer for this column
*/
public TableCellRenderer getHeaderRenderer() {
return headerRenderer;
}
/**
* Returns the header value for this column. The header value is the
* object that will be provided to the header renderer to produce
* a component that will be used as the table header for this column.
*
* @return the header value for this column
*/
public Object getHeaderValue() {
return headerValue;
}
/**
* Returns the identifier for this column. Each table column may have
* an identifier. Identifiers are provided as a convenience to the
* application developer, and are neither used nor required by the
* Table component.
*
* @return the identifier for this column
*/
public Object getIdentifier() {
return identifier;
}
/**
* Returns the column index of the model which this
* TableColumn represents.
* This value is independent of the column's position within the column
* model, such that columns may be displayed in an arbitrary order.
*
* @return the index of the column in the model
*/
public int getModelIndex() {
return modelIndex;
}
/**
* Returns the width of the column.
* This property supports Extents with
* fixed or percentile units.
*
* @return the width
*/
public Extent getWidth() {
return width;
}
/**
* Removes a PropertyChangeListener from being notified
* of property changes to the column.
*
* @param l the listener to remove
*/
public void removePropertyChangeListener(PropertyChangeListener l) {
pcs.removePropertyChangeListener(l);
}
/**
* Sets the TableCellRenderer used to render values
* contained in the column. The value of this property may be null,
* in which case the table should revert to using its default cell
* renderer.
*
* @param newValue the new cell renderer
*/
public void setCellRenderer(TableCellRenderer newValue) {
TableCellRenderer oldValue = cellRenderer;
cellRenderer = newValue;
pcs.firePropertyChange(CELL_RENDERER_CHANGED_PROPERTY, oldValue, newValue);
}
/**
* Sets the TableCellRenderer used to render the
* header cell of this column. The value of this property may be null,
* in which case the table should revert to using its default cell
* renderer.
*
* @param newValue the new header cell renderer
*/
public void setHeaderRenderer(TableCellRenderer newValue) {
TableCellRenderer oldValue = headerRenderer;
headerRenderer = newValue;
pcs.firePropertyChange(HEADER_RENDERER_CHANGED_PROPERTY, oldValue, newValue);
}
/**
* Sets the header value for this column. The header value is the
* object that will be provided to the header renderer to produce
* a component that will be used as the table header for this column.
*
* @param newValue the new header value
*/
public void setHeaderValue(Object newValue) {
Object oldValue = headerValue;
headerValue = newValue;
pcs.firePropertyChange(HEADER_VALUE_CHANGED_PROPERTY, oldValue, newValue);
}
/**
* Sets the identifier for this column. Each table column may have
* an identifier. Identifiers are provided as a convenience to the
* application developer, and are neither used nor required by the
* Table component.
*
* @param newValue The new identifier for this column.
*/
public void setIdentifier(Object newValue) {
Object oldValue = identifier;
identifier = newValue;
pcs.firePropertyChange(IDENTIFIER_CHANGED_PROPERTY, oldValue, newValue);
}
/**
* Sets the index of the column in the TableModel which
* this TableColumn object represents. This value is
* independent of the column's position within the column model, such that
* columns may be displayed in an arbitrary order.
*
* @param newValue the index of the column in the model
*/
public void setModelIndex(int newValue) {
int oldValue = modelIndex;
modelIndex = newValue;
pcs.firePropertyChange(MODEL_INDEX_CHANGED_PROPERTY, oldValue, newValue);
}
/**
* Sets the width of the column.
* This property supports Extents with
* fixed or percentile units.
*
* @param newValue the new width
*/
public void setWidth(Extent newValue) {
Extent oldValue = width;
width = newValue;
pcs.firePropertyChange(WIDTH_CHANGED_PROPERTY, oldValue, newValue);
}
}
